text: # -*- coding: utf-8 -*-
  # Copyright 2020 Google LLC
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  import warnings
  from typing import Callable, Dict, Optional, Sequence, Tuple, Union
  
  from google.api_core import grpc_helpers
  from google.api_core import operations_v1
  from google.api_core import gapic_v1
  import google.auth  # type: ignore
  from google.auth import credentials as ga_credentials  # type: ignore
  from google.auth.transport.grpc import SslCredentials  # type: ignore
  
  import grpc  # type: ignore
  
  from google.cloud.functions_v1.types import functions
  from google.iam.v1 import iam_policy_pb2  # type: ignore
  from google.iam.v1 import policy_pb2  # type: ignore
  from google.longrunning import operations_pb2  # type: ignore
  from .base import CloudFunctionsServiceTransport, DEFAULT_CLIENT_INFO
  
  
  class CloudFunctionsServiceGrpcTransport(CloudFunctionsServiceTransport):
      """gRPC backend transport for CloudFunctionsService.
  
      A service that application uses to manipulate triggers and
      functions.
  
      This class defines the same methods as the primary client, so the
      primary client can load the underlying transport implementation
      and call it.
  
      It sends protocol buffers over the wire using gRPC (which is built on
      top of HTTP/2); the ``grpcio`` package must be installed.
      """
  
      _stubs: Dict[str, Callable]
  
      def __init__(
          self,
          *,
          host: str = "cloudfunctions.googleapis.com",
          credentials: ga_credentials.Credentials = None,
          credentials_file: str = None,
          scopes: Sequence[str] = None,
          channel: grpc.Channel = None,
          api_mtls_endpoint: str = None,
          client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
          ssl_channel_credentials: grpc.ChannelCredentials = None,
          client_cert_source_for_mtls: Callable[[], Tuple[bytes, bytes]] = None,
          quota_project_id: Optional[str] = None,
          client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
          always_use_jwt_access: Optional[bool] = False,
      ) -> None:
          """Instantiate the transport.
  
          Args:
              host (Optional[str]):
                   The hostname to connect to.
              credentials (Optional[google.auth.credentials.Credentials]): The
                  authorization credentials to attach to requests. These
                  credentials identify the application to the service; if none
                  are specified, the client will attempt to ascertain the
                  credentials from the environment.
                  This argument is ignored if ``channel`` is provided.
              credentials_file (Optional[str]): A file with credentials that can
                  be loaded with :func:`google.auth.load_credentials_from_file`.
                  This argument is ignored if ``channel`` is provided.
              scopes (Optional(Sequence[str])): A list of scopes. This argument is
                  ignored if ``channel`` is provided.
              channel (Optional[grpc.Channel]): A ``Channel`` instance through
                  which to make calls.
              api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                  If provided, it overrides the ``host`` argument and tries to create
                  a mutual TLS channel with client SSL credentials from
                  ``client_cert_source`` or application default SSL credentials.
              client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                  Deprecated. A callback to provide client SSL certificate bytes and
                  private key bytes, both in PEM format. It is ignored if
                  ``api_mtls_endpoint`` is None.
              ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
                  for the grpc channel. It is ignored if ``channel`` is provided.
              client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                  A callback to provide client certificate bytes and private key bytes,
                  both in PEM format. It is used to configure a mutual TLS channel. It is
                  ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
              quota_project_id (Optional[str]): An optional project to use for billing
                  and quota.
              client_info (google.api_core.gapic_v1.client_info.ClientInfo):
                  The client info used to send a user-agent string along with
                  API requests. If ``None``, then default info will be used.
                  Generally, you only need to set this if you're developing
                  your own client library.
              always_use_jwt_access (Optional[bool]): Whether self signed JWT should
                  be used for service account credentials.
  
          Raises:
            google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
                creation failed for any reason.
            google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
                and ``credentials_file`` are passed.
          """
          self._grpc_channel = None
          self._ssl_channel_credentials = ssl_channel_credentials
          self._stubs: Dict[str, Callable] = {}
          self._operations_client: Optional[operations_v1.OperationsClient] = None
  
          if api_mtls_endpoint:
              warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
          if client_cert_source:
              warnings.warn("client_cert_source is deprecated", DeprecationWarning)
  
          if channel:
              # Ignore credentials if a channel was passed.
              credentials = False
              # If a channel was explicitly provided, set it.
              self._grpc_channel = channel
              self._ssl_channel_credentials = None
  
          else:
              if api_mtls_endpoint:
                  host = api_mtls_endpoint
  
                  # Create SSL credentials with client_cert_source or application
                  # default SSL credentials.
                  if client_cert_source:
                      cert, key = client_cert_source()
                      self._ssl_channel_credentials = grpc.ssl_channel_credentials(
                          certificate_chain=cert, private_key=key
                      )
                  else:
                      self._ssl_channel_credentials = SslCredentials().ssl_credentials
  
              else:
                  if client_cert_source_for_mtls and not ssl_channel_credentials:
                      cert, key = client_cert_source_for_mtls()
                      self._ssl_channel_credentials = grpc.ssl_channel_credentials(
                          certificate_chain=cert, private_key=key
                      )
  
          # The base transport sets the host, credentials and scopes
          super().__init__(
              host=host,
              credentials=credentials,
              credentials_file=credentials_file,
              scopes=scopes,
              quota_project_id=quota_project_id,
              client_info=client_info,
              always_use_jwt_access=always_use_jwt_access,
          )
  
          if not self._grpc_channel:
              self._grpc_channel = type(self).create_channel(
                  self._host,
                  credentials=self._credentials,
                  credentials_file=credentials_file,
                  scopes=self._scopes,
                  ssl_credentials=self._ssl_channel_credentials,
                  quota_project_id=quota_project_id,
                  options=[
                      ("grpc.max_send_message_length", -1),
                      ("grpc.max_receive_message_length", -1),
                  ],
              )
  
          # Wrap messages. This must be done after self._grpc_channel exists
          self._prep_wrapped_messages(client_info)
  
      @classmethod
      def create_channel(
          cls,
          host: str = "cloudfunctions.googleapis.com",
          credentials: ga_credentials.Credentials = None,
          credentials_file: str = None,
          scopes: Optional[Sequence[str]] = None,
          quota_project_id: Optional[str] = None,
          **kwargs,
      ) -> grpc.Channel:
          """Create and return a gRPC channel object.
          Args:
              host (Optional[str]): The host for the channel to use.
              credentials (Optional[~.Credentials]): The
                  authorization credentials to attach to requests. These
                  credentials identify this application to the service. If
                  none are specified, the client will attempt to ascertain
                  the credentials from the environment.
              credentials_file (Optional[str]): A file with credentials that can
                  be loaded with :func:`google.auth.load_credentials_from_file`.
                  This argument is mutually exclusive with credentials.
              scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                  service. These are only used when credentials are not specified and
                  are passed to :func:`google.auth.default`.
              quota_project_id (Optional[str]): An optional project to use for billing
                  and quota.
              kwargs (Optional[dict]): Keyword arguments, which are passed to the
                  channel creation.
          Returns:
              grpc.Channel: A gRPC channel object.
  
          Raises:
              google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
                and ``credentials_file`` are passed.
          """
  
          return grpc_helpers.create_channel(
              host,
              credentials=credentials,
              credentials_file=credentials_file,
              quota_project_id=quota_project_id,
              default_scopes=cls.AUTH_SCOPES,
              scopes=scopes,
              default_host=cls.DEFAULT_HOST,
              **kwargs,
          )
  
      @property
      def grpc_channel(self) -> grpc.Channel:
          """Return the channel designed to connect to this service.
          """
          return self._grpc_channel
  
      @property
      def operations_client(self) -> operations_v1.OperationsClient:
          """Create the client designed to process long-running operations.
  
          This property caches on the instance; repeated calls return the same
          client.
          """
          # Sanity check: Only create a new client if we do not already have one.
          if self._operations_client is None:
              self._operations_client = operations_v1.OperationsClient(self.grpc_channel)
  
          # Return the client from cache.
          return self._operations_client
  
      @property
      def list_functions(
          self,
      ) -> Callable[[functions.ListFunctionsRequest], functions.ListFunctionsResponse]:
          r"""Return a callable for the list functions method over gRPC.
  
          Returns a list of functions that belong to the
          requested project.
  
          Returns:
              Callable[[~.ListFunctionsRequest],
                      ~.ListFunctionsResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "list_functions" not in self._stubs:
              self._stubs["list_functions"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/ListFunctions",
                  request_serializer=functions.ListFunctionsRequest.serialize,
                  response_deserializer=functions.ListFunctionsResponse.deserialize,
              )
          return self._stubs["list_functions"]
  
      @property
      def get_function(
          self,
      ) -> Callable[[functions.GetFunctionRequest], functions.CloudFunction]:
          r"""Return a callable for the get function method over gRPC.
  
          Returns a function with the given name from the
          requested project.
  
          Returns:
              Callable[[~.GetFunctionRequest],
                      ~.CloudFunction]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "get_function" not in self._stubs:
              self._stubs["get_function"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/GetFunction",
                  request_serializer=functions.GetFunctionRequest.serialize,
                  response_deserializer=functions.CloudFunction.deserialize,
              )
          return self._stubs["get_function"]
  
      @property
      def create_function(
          self,
      ) -> Callable[[functions.CreateFunctionRequest], operations_pb2.Operation]:
          r"""Return a callable for the create function method over gRPC.
  
          Creates a new function. If a function with the given name
          already exists in the specified project, the long running
          operation will return ``ALREADY_EXISTS`` error.
  
          Returns:
              Callable[[~.CreateFunctionRequest],
                      ~.Operation]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "create_function" not in self._stubs:
              self._stubs["create_function"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/CreateFunction",
                  request_serializer=functions.CreateFunctionRequest.serialize,
                  response_deserializer=operations_pb2.Operation.FromString,
              )
          return self._stubs["create_function"]
  
      @property
      def update_function(
          self,
      ) -> Callable[[functions.UpdateFunctionRequest], operations_pb2.Operation]:
          r"""Return a callable for the update function method over gRPC.
  
          Updates existing function.
  
          Returns:
              Callable[[~.UpdateFunctionRequest],
                      ~.Operation]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "update_function" not in self._stubs:
              self._stubs["update_function"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/UpdateFunction",
                  request_serializer=functions.UpdateFunctionRequest.serialize,
                  response_deserializer=operations_pb2.Operation.FromString,
              )
          return self._stubs["update_function"]
  
      @property
      def delete_function(
          self,
      ) -> Callable[[functions.DeleteFunctionRequest], operations_pb2.Operation]:
          r"""Return a callable for the delete function method over gRPC.
  
          Deletes a function with the given name from the
          specified project. If the given function is used by some
          trigger, the trigger will be updated to remove this
          function.
  
          Returns:
              Callable[[~.DeleteFunctionRequest],
                      ~.Operation]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "delete_function" not in self._stubs:
              self._stubs["delete_function"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/DeleteFunction",
                  request_serializer=functions.DeleteFunctionRequest.serialize,
                  response_deserializer=operations_pb2.Operation.FromString,
              )
          return self._stubs["delete_function"]
  
      @property
      def call_function(
          self,
      ) -> Callable[[functions.CallFunctionRequest], functions.CallFunctionResponse]:
          r"""Return a callable for the call function method over gRPC.
  
          Synchronously invokes a deployed Cloud Function. To be used for
          testing purposes as very limited traffic is allowed. For more
          information on the actual limits, refer to `Rate
          Limits <https://cloud.google.com/functions/quotas#rate_limits>`__.
  
          Returns:
              Callable[[~.CallFunctionRequest],
                      ~.CallFunctionResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "call_function" not in self._stubs:
              self._stubs["call_function"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/CallFunction",
                  request_serializer=functions.CallFunctionRequest.serialize,
                  response_deserializer=functions.CallFunctionResponse.deserialize,
              )
          return self._stubs["call_function"]
  
      @property
      def generate_upload_url(
          self,
      ) -> Callable[
          [functions.GenerateUploadUrlRequest], functions.GenerateUploadUrlResponse
      ]:
          r"""Return a callable for the generate upload url method over gRPC.
  
          Returns a signed URL for uploading a function source code. For
          more information about the signed URL usage see:
          https://cloud.google.com/storage/docs/access-control/signed-urls.
          Once the function source code upload is complete, the used
          signed URL should be provided in CreateFunction or
          UpdateFunction request as a reference to the function source
          code.
  
          When uploading source code to the generated signed URL, please
          follow these restrictions:
  
          -  Source file type should be a zip file.
          -  Source file size should not exceed 100MB limit.
          -  No credentials should be attached - the signed URLs provide
             access to the target bucket using internal service identity;
             if credentials were attached, the identity from the
             credentials would be used, but that identity does not have
             permissions to upload files to the URL.
  
          When making a HTTP PUT request, these two headers need to be
          specified:
  
          -  ``content-type: application/zip``
          -  ``x-goog-content-length-range: 0,104857600``
  
          And this header SHOULD NOT be specified:
  
          -  ``Authorization: Bearer YOUR_TOKEN``
  
          Returns:
              Callable[[~.GenerateUploadUrlRequest],
                      ~.GenerateUploadUrlResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "generate_upload_url" not in self._stubs:
              self._stubs["generate_upload_url"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/GenerateUploadUrl",
                  request_serializer=functions.GenerateUploadUrlRequest.serialize,
                  response_deserializer=functions.GenerateUploadUrlResponse.deserialize,
              )
          return self._stubs["generate_upload_url"]
  
      @property
      def generate_download_url(
          self,
      ) -> Callable[
          [functions.GenerateDownloadUrlRequest], functions.GenerateDownloadUrlResponse
      ]:
          r"""Return a callable for the generate download url method over gRPC.
  
          Returns a signed URL for downloading deployed
          function source code. The URL is only valid for a
          limited period and should be used within minutes after
          generation.
          For more information about the signed URL usage see:
          https://cloud.google.com/storage/docs/access-
          control/signed-urls
  
          Returns:
              Callable[[~.GenerateDownloadUrlRequest],
                      ~.GenerateDownloadUrlResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "generate_download_url" not in self._stubs:
              self._stubs["generate_download_url"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/GenerateDownloadUrl",
                  request_serializer=functions.GenerateDownloadUrlRequest.serialize,
                  response_deserializer=functions.GenerateDownloadUrlResponse.deserialize,
              )
          return self._stubs["generate_download_url"]
  
      @property
      def set_iam_policy(
          self,
      ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], policy_pb2.Policy]:
          r"""Return a callable for the set iam policy method over gRPC.
  
          Sets the IAM access control policy on the specified
          function. Replaces any existing policy.
  
          Returns:
              Callable[[~.SetIamPolicyRequest],
                      ~.Policy]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "set_iam_policy" not in self._stubs:
              self._stubs["set_iam_policy"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/SetIamPolicy",
                  request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
                  response_deserializer=policy_pb2.Policy.FromString,
              )
          return self._stubs["set_iam_policy"]
  
      @property
      def get_iam_policy(
          self,
      ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], policy_pb2.Policy]:
          r"""Return a callable for the get iam policy method over gRPC.
  
          Gets the IAM access control policy for a function.
          Returns an empty policy if the function exists and does
          not have a policy set.
  
          Returns:
              Callable[[~.GetIamPolicyRequest],
                      ~.Policy]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "get_iam_policy" not in self._stubs:
              self._stubs["get_iam_policy"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/GetIamPolicy",
                  request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
                  response_deserializer=policy_pb2.Policy.FromString,
              )
          return self._stubs["get_iam_policy"]
  
      @property
      def test_iam_permissions(
          self,
      ) -> Callable[
          [iam_policy_pb2.TestIamPermissionsRequest],
          iam_policy_pb2.TestIamPermissionsResponse,
      ]:
          r"""Return a callable for the test iam permissions method over gRPC.
  
          Tests the specified permissions against the IAM access control
          policy for a function. If the function does not exist, this will
          return an empty set of permissions, not a NOT_FOUND error.
  
          Returns:
              Callable[[~.TestIamPermissionsRequest],
                      ~.TestIamPermissionsResponse]:
                  A function that, when called, will call the underlying RPC
                  on the server.
          """
          # Generate a "stub function" on-the-fly which will actually make
          # the request.
          # gRPC handles serialization and deserialization, so we just need
          # to pass in the functions for each.
          if "test_iam_permissions" not in self._stubs:
              self._stubs["test_iam_permissions"] = self.grpc_channel.unary_unary(
                  "/google.cloud.functions.v1.CloudFunctionsService/TestIamPermissions",
                  request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
                  response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
              )
          return self._stubs["test_iam_permissions"]
  
      def close(self):
          self.grpc_channel.close()
  
  
  __all__ = ("CloudFunctionsServiceGrpcTransport",)
  